% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@PHDTHESIS{Wang:841224,
author = {Wang, Panpan},
title = {{N}umerical {S}imulation of {P}lasma {S}pray-{P}hysical
{V}apor {D}eposition},
volume = {401},
school = {Universität Bochum},
type = {Dissertation},
address = {Jülich},
publisher = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
reportid = {FZJ-2017-08316},
isbn = {978-3-95806-282-5},
series = {Schriften des Forschungszentrums Jülich Reihe Energie $\&$
Umwelt / Energy $\&$ Environment},
pages = {IX, 127 S.},
year = {2017},
note = {Universität Bochum, Diss., 2017},
abstract = {The modeling of the plasma spray process is driven by the
intention of further increasing the understanding the growth
mechanisms of columnar thermal barrier coatings (TBC). The
major parameters associated with the deposition process in
the experiment are the power input, plasma gas composition,
and chamber pressures resulting in distinct microstructures.
Therefore, the objective of this study was to simulate the
plasma jet and the growth of columnar TBCs. Five main topics
were examined: (1) thermodynamic and transport properties
for different plasma mixtures (35Ar-60He,
35Ar-60He-10H$_{2}$, and 100Ar-10H$_{2}$)depending on the
pressure and the temperature; (2) vacuum plasma spray (VPS);
(3) plasma-spray physical vapor deposition (PS-PVD); (4)
built-up of columnar coatings using the Monte-Carlo method;
(5) validation by experiments. Investigations of
thermodynamic and transport properties gave the basis for
the understanding of the plasma process and provide data of
the following plasma jet modeling. The plasma jet modeling
used three types of plasma mixture (35Ar-60He atpressures
ranging from 200 Pa-10000 Pa, 35Ar-60He-10H$_{2}$ at a
pressure of 200 Pa, and100Ar-10H$_{2}$ at a pressure of 200
Pa) was carried out by ANSYS Fluent 17, the results were
compared to photographs of the plasma jets. Taking into
account the influence of non-equilibrium, the plasma
composition and spectral line intensities were calculated.
Results of the measured and calculated intensities proved
that non-equilibrium exists. Finally, a two-dimensional
Monte Carlo simulation was used to investigate the formation
of columnar growth in plasma spray-physical vapor deposition
process (PS-PVD). The surface diffusion in the coating was
neglected because of the high deposition rate. The detailed
examination of the morphology, the orientation, the porosity
level of the columns is given, which is compared to the
microstructures produced by a PS-PVD process.},
cin = {IEK-1},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {899 - ohne Topic (POF3-899) / HITEC - Helmholtz
Interdisciplinary Doctoral Training in Energy and Climate
Research (HITEC) (HITEC-20170406)},
pid = {G:(DE-HGF)POF3-899 / G:(DE-Juel1)HITEC-20170406},
typ = {PUB:(DE-HGF)3 / PUB:(DE-HGF)11},
url = {https://juser.fz-juelich.de/record/841224},
}